Questions for Liquid Penetrant Testing – Specific

Questions for Liquid Penetrant Testing – Specific


1) According to the ASME Sec V, the temperature range for PT testing within:

(a)        10°F (50°C) to 45°F (113°C)

(b)        12°C(53°F) to 52°C(125°F)

(c)        10°C (50°F) to 45°C (113°F)

(d)        none of the above

2) Liquid penetrants can be further categorized by the removal method of excess surface penetrant:

(a)        Water washable

(b)        Solvent removable

(c)        Post emulsified

(d)        All of the above

3) Which of the following is a reason to post clean a part after a liquid penetrant test:

(a)        The part might be further processed

(b)        If repairs are necessary

(c)        Developers absorb moisture and may result in part being corroded

(d)        All of the reasons are correct

4) According to the ASME Sec V, the relevant indication:

(a)        ½ inch (12.7mm)

(b)        1/8 inch (3.175mm)

(c)        1/16 inch (1.6mm)

(d)        none of the above

5) According to the ASME Sec V, which statement is/are true?

(a)        Prior to each liquid penetrant examination, the surface to be examined

(b)        The intensity of visible light at the surface of the part undergoing examination should be a minimum 1000 lux.

(c)        The intensity of black (ultraviolet) light at the surface of the part undergoing examination should be a minimum of 1000μW⁄cm².

(d)        all of the above

6) The minimum dwell time according to the ASME Sec V?

(a)        5 minute

(b)        7 minute

(c)        10 minute

(d)        15 minute

7) According to the ASME Sec V, which statement is/are false?

(a)        The intermixing of penetrant materials from different manufactures is allow

(b)        Any questionable or doubtful indications shall be re-examined to determine      whether they are relevant

(c)        Unacceptable indications shall be removed or repaired or cut-off, to be re-examined to assure the complete removal or reduction to an acceptable size

(d)        all of the above

8) The minimum dimension for acceptance of indication, according to the ASME Sec V:

(a)        greater than 4.8mm (3/16)

(b)        greater than 1.6mm (1/16)

(c)        equal to 1.6mm (1/16)

(d)        there is not any details provided

9) Post cleaning is especially important when:

(a)        Post emulsified penetrants are used

(b)        Phosphate containing detergents are used

(c)        Chlorinated hydrocarbons are used

(d)        The test object will be used in a liquid oxygen environment

10) Which of the following is normally prohibited as a method of removing excess penetrant when using the solvent removable penetrant process?

(a)        A water spray

(b)        A hydrophilic scrubber

(c)        Buffing

(d)        Clean with lint free towels moistened with solvent

11) During a visible, solvent removable penetrant test, complete penetrant removal is indicated by:

(a)        Absence of red indications on the test piece surface

(b)        Clean rinse water

(c)        Completion of the rinse cycle

(d)        Absence of red dye on the cleaning towels

12) Which penetrant process is best suited to high production rates of many small parts?

(a)        Solvent removable

(b)        Water washable

(c)        Post emulsifiable

(d)        Fluorescent

13) The typical temperature ranges for conducting a liquid penetrant test is:

(a)        0 to 60ºC

(b)        10 to 52ºC

(c)        20 to 52ºC

(d)        10 to 52ºK

14) Which of the following methods is not recommended for pre-cleaning prior to a liquid penetrant test?

(a)        Steam cleaning, etching, rust and paint removal

(b)        Solvent wipe, vapour degreasing, ultrasonic bath cleaning

(c)        Blasting, grinding, filing, honing, machining

(d)        All of the listed methods are not recommended

15) The purpose of using a developer is:

(a)       To create a contrasting background for the penetrants to ensure better   visibility of indications

(b)        Assists in reverse capillary action due to absorption ability of developers

(c)        Prevent the part from corroding after the liquid penetrant test

(d)        To ensure that the part has been correctly heat treated

(e)        Both a and b are correct

16) Which of the following dwell time gives the highest sensitivity test results?

(a)        7 min

(b)        10 min

(c)        12 min

(d)        15 min

17) Before PT soft material should not be performed?

(a)        Etching

(b)        Solvent cleaning

(c)        Ultrasonic cleaning

(d)        Grinding

18) A penetrant which requires allowable time on job is called?

(a)        spray time

(b)        rinse time

(c)        dwell time

(d)        Solvent suspended time

19) A penetrant testing method in which water use to wash the excess penetrant

(a)        Self emulsifying

(b)        Post emulsifiable

(c)        Water washable

(d)        Solvent removable

20) Porous material discontinuities are best detected by which penetrant testing method?

(a)        Solvent removable

(b)        Water washable

(c)        Post emulsifiable

(d)        None of the above

21) The general term used to refer to break the metallic continuity of the part being tested is:

(a)        defect

(b)        discontinuity

(c)        crack

(d)        indication

22) Which of the following can’t detect by PT?

(a)        Internal crack

(b)       undercut

(c)        crack open to surface

(d)        surface porosity

23) Which of the following is a discontinuity that might be found in rolled plate?

(a)        lamination

(b)        lack of fusion

(c)        undercut

(d)        bleedout

24) Use of developer provide following advantage:

(a)        contrast between job and developer

(b)        help penetrant to penetrate

(c)     Contrast between developer and penetrant

(d)        all of the above

25) Which of the following is an advantage of visible dye penetrants over fluorescent penetrant?

(a)         Small indication more easily seen

(b)        they can be used on anodized and chromate surface

(c)        they make less background on rough surfaces

(d)        no special lighting is required

26) Which of the following contaminants could affect the sensitivity of a penetrant?

(a)        acid

(b)        water

(c)        salt

(d)        all of the above

(e)        No effect on testing

27) Solvent cleaner penetrant shall be clean with…………….and in…………direction:

(a)        Lint free cloth, one

(b)        Lint free cloth, two

(c)        Lint cloth, one

(d)        Lint cloth, two

28) The penetrant should have

(a)        low flash point

(b)        high flash point

(c)        variable flash point

(d)        not define

29) The indications that should be consider:

(a)        relevant

(b)        nonrelevant

(c)        false

(d)        all of the above

30) Materials that are chemically active can examine with pt?

(a)        not examine

(b)           Yes examine

(c)       before examine, insure that materials sample not react/effected by pt materials

(d)       none of the above